Global Precipitation Measurement (GPM) ist eine internationale Satellitenmission, die alle drei Stunden Beobachtungen der nächsten Generation zu Regen und Schnee weltweit liefert. IMERG (Integrated Multi-satellitE Retrievals for GPM) ist der einheitliche Algorithmus, der Niederschlagschätzungen liefert, indem Daten von allen passiven Mikrowelleninstrumenten in der GPM-Konstellation kombiniert werden.
Dieser Algorithmus soll alle satellitengestützten Mikrowellen-Niederschlagschätzungen sowie mikrowellenkalibrierte Infrarot-Satellitenschätzungen, Niederschlagsmessungen und möglicherweise andere Niederschlagschätzungen auf feinen Zeit- und Raumskalen für die TRMM- und GPM-Ären auf der ganzen Welt intercalibrieren, zusammenführen und interpolieren.
Das System wird für jeden Beobachtungszeitraum mehrmals ausgeführt. Zuerst wird eine schnelle Schätzung vorgenommen und dann werden nach und nach bessere Schätzungen geliefert, wenn mehr Daten eingehen. Im letzten Schritt werden monatliche Messdaten verwendet, um Produkte auf Forschungsebene zu erstellen. Weitere Informationen zum Algorithmus finden Sie in der technischen Dokumentation zu IMERG.
Gewichtung von Niederschlagsmessungen im Vergleich zu Niederschlagsmessungen mit mehreren Satelliten
precipitation
mm/h
Meter
Zusammengeführte Niederschlagsschätzung aus Satelliten- und Messdaten
precipitationQualityIndex
Entsprechende Messgeräte pro 2,5-Grad-Feld
Meter
Qualitätsindex für das Niederschlagsfeld
probabilityLiquidPrecipitation
%
Meter
Akkumulationsgewichtete Wahrscheinlichkeit der flüssigen Niederschlagsphase
randomError
mm/h
Meter
Zufallsfehler für zusammengeführte Niederschlagsdaten von Satelliten und Messgeräten
Nutzungsbedingungen
Nutzungsbedingungen
Alle von der NASA im Rahmen der GPM-Mission erstellten Daten sind für die Öffentlichkeit frei verfügbar.
Zitate
Zitate:
Huffman, G.J., E.F. Stocker, D.T. Bolvin, E.J. Nelkin, Jackson Tan (2019),
GPM IMERG Final Precipitation L3 1 month 0.1 degree x 0.1 degree V07,
Greenbelt, MD, Goddard Earth Sciences Data and Information Services Center
(GES DISC), abgerufen am [Data Access Date], 10.5067/GPM/IMERG/3B-MONTH/07
Global Precipitation Measurement (GPM) ist eine internationale Satellitenmission, die alle drei Stunden Beobachtungen der nächsten Generation zu Regen und Schnee weltweit liefert. IMERG (Integrated Multi-satellitE Retrievals for GPM) ist der einheitliche Algorithmus, der Niederschlagsschätzungen auf Grundlage von Daten aus allen passiven Mikrowelleninstrumenten in der GPM-Konstellation liefert. Dieser Algorithmus soll …
[null,null,[],[[["\u003cp\u003eThe NASA/GPM_L3/IMERG_MONTHLY_V07 dataset provides monthly global precipitation estimates from June 2000 to June 2024.\u003c/p\u003e\n"],["\u003cp\u003eIt combines data from all passive-microwave instruments in the GPM Constellation, along with IR satellite estimates and gauge analyses.\u003c/p\u003e\n"],["\u003cp\u003eIMERG, the unified algorithm behind the dataset, intercalibrates, merges, and interpolates precipitation data at fine time and space scales.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset has a spatial resolution of 11132 meters and includes bands like precipitation, precipitationQualityIndex, and probabilityLiquidPrecipitation.\u003c/p\u003e\n"],["\u003cp\u003eGPM data is freely available for public use.\u003c/p\u003e\n"]]],[],null,["# GPM: Monthly Global Precipitation Measurement (GPM) vRelease 07\n\nDataset Availability\n: 2000-06-01T00:00:00Z--2025-03-01T00:00:00Z\n\nDataset Provider\n:\n\n\n [NASA GES DISC at NASA Goddard Space Flight Center](https://doi.org/10.5067/GPM/IMERG/3B-MONTH/07)\n\nCadence\n: 1 Month\n\nTags\n:\n[climate](/earth-engine/datasets/tags/climate) [geophysical](/earth-engine/datasets/tags/geophysical) [gpm](/earth-engine/datasets/tags/gpm) [imerg](/earth-engine/datasets/tags/imerg) [jaxa](/earth-engine/datasets/tags/jaxa) [monthly](/earth-engine/datasets/tags/monthly) [nasa](/earth-engine/datasets/tags/nasa) [precipitation](/earth-engine/datasets/tags/precipitation) [weather](/earth-engine/datasets/tags/weather) \n\n#### Description\n\nGlobal Precipitation Measurement (GPM) is an international\nsatellite mission to provide next-generation observations of\nrain and snow worldwide every three hours. The Integrated Multi-satellitE\nRetrievals for GPM (IMERG) is the unified algorithm that provides\nrainfall estimates combining data from all passive-microwave\ninstruments in the GPM Constellation.\n\nThis algorithm is intended to intercalibrate, merge, and interpolate\nall satellite microwave precipitation estimates, together with\nmicrowave-calibrated infrared (IR) satellite estimates, precipitation\ngauge analyses, and potentially other precipitation estimators at fine\ntime and space scales for the TRMM and GPM eras over the entire globe.\nThe system is run several times for each observation time, first\ngiving a quick estimate and successively providing better estimates\nas more data arrive. The final step uses monthly gauge data to\ncreate research-level products. See [IMERG Technical Documentation](https://pmm.nasa.gov/sites/default/files/document_files/IMERG_doc.pdf)\nfor more details on the algorithm.\n\nDocumentation:\n\n- [Algorithm Theoretical Basis Document](https://arthurhou.pps.eosdis.nasa.gov/Documents/IMERG_V07_ATBD_final.pdf)\n\n- [IMERG Quality Index](https://docserver.gesdisc.eosdis.nasa.gov/public/project/GPM/IMERGV06_QI.pdf)\n\n- [Caveats for IMERG extension into TRMM era](https://docserver.gesdisc.eosdis.nasa.gov/public/project/GPM/IMERGV06_TRMMera-caveats.pdf)\n\n- [IMERG Technical Documentation](https://arthurhou.pps.eosdis.nasa.gov/Documents/IMERG_TechnicalDocumentation_final.pdf)\n\n- [Release notes; New Morphing algorithm](https://gpm.nasa.gov/sites/default/files/2024-02/IMERG_V07_ReleaseNotes_240221.pdf)\n\n- [Remote-Sensing Reflectance](https://gpm1.gesdisc.eosdis.nasa.gov/data/GPM_L3/doc/README.GPM.pdf)\n\n- [Anomalies](https://gpmweb2https.pps.eosdis.nasa.gov/tsdis/AB/docs/gpm_anomalous.html)\n\nThis collection contains data from\n[GPM_3IMERGM_07](https://disc.gsfc.nasa.gov/datasets/GPM_3IMERGM_07/summary)\n\n### Bands\n\n\n**Pixel Size**\n\n11132 meters\n\n**Bands**\n\n| Name | Units | Pixel Size | Description |\n|----------------------------------|--------------------------------------|------------|--------------------------------------------------------------------------------|\n| `gaugeRelativeWeighting` | % | meters | Weighting of gauge precipitation relative to the multi-satellite precipitation |\n| `precipitation` | mm/hr | meters | Merged satellite-gauge precipitation estimate |\n| `precipitationQualityIndex` | Equivalent gauges per 2.5 degree box | meters | Quality Index for precipitation field |\n| `probabilityLiquidPrecipitation` | % | meters | Accumulation-weighted probability of liquid precipitation phase |\n| `randomError` | mm/hr | meters | Random error for merged satellite-gauge precipitation |\n\n### Terms of Use\n\n**Terms of Use**\n\nAll NASA-produced data from the GPM mission is made freely available for the public to use.\n\n### Citations\n\nCitations:\n\n- Huffman, G.J., E.F. Stocker, D.T. Bolvin, E.J. Nelkin, Jackson Tan (2019),\n GPM IMERG Final Precipitation L3 1 month 0.1 degree x 0.1 degree V07,\n Greenbelt, MD, Goddard Earth Sciences Data and Information Services Center\n (GES DISC), Accessed: \\[Data Access Date\\], 10.5067/GPM/IMERG/3B-MONTH/07\n\n### DOIs\n\n- \u003chttps://doi.org/10.5067/GPM/IMERG/3B-MONTH/07\u003e\n\n### Explore with Earth Engine\n\n| **Important:** Earth Engine is a platform for petabyte-scale scientific analysis and visualization of geospatial datasets, both for public benefit and for business and government users. Earth Engine is free to use for research, education, and nonprofit use. To get started, please [register for Earth Engine access.](https://console.cloud.google.com/earth-engine)\n\n### Code Editor (JavaScript)\n\n```javascript\nvar dataset = ee.ImageCollection('NASA/GPM_L3/IMERG_MONTHLY_V07')\n .filterDate('2022-01-01', '2023-01-01');\n\n// Select the max precipitation and mask out low precipitation values.\nvar precipitation = dataset.select('precipitation').max();\nvar mask = precipitation.gt(0.25);\nvar precipitation = precipitation.updateMask(mask);\n\nvar palette = [\n '000096','0064ff', '00b4ff', '33db80', '9beb4a',\n 'ffeb00', 'ffb300', 'ff6400', 'eb1e00', 'af0000'\n];\nvar precipitationVis = {min: 0.0, max: 1.5, palette: palette};\nMap.addLayer(precipitation, precipitationVis, 'Precipitation (mm/hr)');\nMap.setCenter(-76, 33, 3);\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/NASA/NASA_GPM_L3_IMERG_MONTHLY_V07) \n[GPM: Monthly Global Precipitation Measurement (GPM) vRelease 07](/earth-engine/datasets/catalog/NASA_GPM_L3_IMERG_MONTHLY_V07) \nGlobal Precipitation Measurement (GPM) is an international satellite mission to provide next-generation observations of rain and snow worldwide every three hours. The Integrated Multi-satellitE Retrievals for GPM (IMERG) is the unified algorithm that provides rainfall estimates combining data from all passive-microwave instruments in the GPM Constellation. This algorithm is intended ... \nNASA/GPM_L3/IMERG_MONTHLY_V07, climate,geophysical,gpm,imerg,jaxa,monthly,nasa,precipitation,weather \n2000-06-01T00:00:00Z/2025-03-01T00:00:00Z \n-90 -180 90 180 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [https://doi.org/10.5067/GPM/IMERG/3B-MONTH/07](https://doi.org/https://doi.org/10.5067/GPM/IMERG/3B-MONTH/07)\n- [https://doi.org/10.5067/GPM/IMERG/3B-MONTH/07](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/NASA_GPM_L3_IMERG_MONTHLY_V07)"]]
